74HC245PW datasheet(6/22 Pages) PHILIPS

部件名	74HC245PW

功能描述	Octal bus transceiver; 3-state

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制造商	PHILIPS [NXP Semiconductors]

网页	http://www.nxp.com

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6 / 22 page

9397 750 14502

Product data sheet

Rev. 03 — 31 January 2005

6 of 22

Philips Semiconductors

74HC245; 74HCT245

Octal bus tranceiver; 3-state

9.

Recommended operating conditions

10. Static characteristics

Table 6:

Recommended operating conditions

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Type 74HC245

VCC

supply voltage

2.0

5.0

6.0

V

VI

input voltage

0

-

VCC

V

VO

output voltage

0

-

VCC

V

tr, tf

input rise and fall

times

VCC = 2.0 V

-

1000

ns

VCC = 4.5 V

-

6.0

500

ns

VCC = 6.0 V

-

400

ns

Tamb

ambient temperature

−40

-

+125

°C

Type 74HCT245

VCC

supply voltage

4.5

5.0

5.5

V

VI

input voltage

0

-

VCC

V

VO

output voltage

0

-

VCC

V

tr, tf

input rise and fall

times

VCC = 4.5 V

-

6.0

500

ns

Tamb

ambient temperature

−40

-

+125

°C

Table 7:

Static characteristics type 74HC245

At recommended operating conditions; voltages are referenced to GND (ground = 0 V).

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Tamb =25 °C

VIH

HIGH-level input voltage

VCC = 2.0 V

1.5

1.2

-

V

VCC = 4.5 V

3.15

2.4

-

V

VCC = 6.0 V

4.2

3.2

-

V

VIL

LOW-level input voltage

VCC = 2.0 V

-

0.8

0.5

V

VCC = 4.5 V

-

2.1

1.35

V

VCC = 6.0 V

-

2.8

1.8

V

VOH

HIGH-level output voltage

VI =VIH or VIL

IO = −20 µA; VCC = 2.0 V

1.9

2.0

-

V

IO = −20 µA; VCC = 4.5 V

4.4

4.5

-

V

IO = −20 µA; VCC = 6.0 V

5.9

6.0

-

V

IO = −6.0 mA; VCC = 4.5 V

3.98

4.32

-

V

IO = −7.8 mA; VCC = 6.0 V

5.48

5.81

-

V

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